shall postmark
Regular verb: postmark - postmarked- postmarked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall postmark
you shall postmark
he shall postmark
we shall postmark
you shall postmark
they shall postmark 	I shall be postmarking
you shall be postmarking
he shall be postmarking
we shall be postmarking
you shall be postmarking
they shall be postmarking	I shall have postmarked
you shall have postmarked
he shall have postmarked
we shall have postmarked
you shall have postmarked
they shall have postmarked	I shall have been postmarking
you shall have been postmarking
he shall have been postmarking
we shall have been postmarking
you shall have been postmarking
they shall have been postmarking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not postmark
you shall not postmark
he shall not postmark
we shall not postmark
you shall not postmark
they shall not postmark 	I shall not be postmarking
you shall not be postmarking
he shall not be postmarking
we shall not be postmarking
you shall not be postmarking
they shall not be postmarking	I shall not have postmarked
you shall not have postmarked
he shall not have postmarked
we shall not have postmarked
you shall not have postmarked
they shall not have postmarked	I shall not have been postmarking
you shall not have been postmarking
he shall not have been postmarking
we shall not have been postmarking
you shall not have been postmarking
they shall not have been postmarking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I postmark?
shall you postmark?
shall he postmark?
shall we postmark?
shall you postmark?
shall they postmark? 	shall I be postmarking?
shall you be postmarking?
shall he be postmarking?
shall we be postmarking?
shall you be postmarking?
shall they be postmarking? 	shall I have postmarked?
shall you have postmarked?
shall he have postmarked?
shall we have postmarked?
shall you have postmarked?
shall they have postmarked? 	shall I have been postmarking?
shall you have been postmarking?
shall he have been postmarking?
shall we have been postmarking?
shall you have been postmarking?
shall they have been postmarking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not postmark?
shall you not postmark?
shall he not postmark?
shall we not postmark?
shall you not postmark?
shall they not postmark? 	shall I not be postmarking?
shall you not be postmarking?
shall he not be postmarking?
shall we not be postmarking?
shall you not be postmarking?
shall they not be postmarking? 	shall I not have postmarked?
shall you not have postmarked?
shall he not have postmarked?
shall we not have postmarked?
shall you not have postmarked?
shall they not have postmarked? 	shall I not have been postmarking?
shall you not have been postmarking?
shall he not have been postmarking?
shall we not have been postmarking?
shall you not have been postmarking?
shall they not have been postmarking?